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We can say that life on earth is supported by the sun as the ultimate energy source and that life on earth would not exist without this source of energy.
How does this statement relate to the two laws of thermodynamics? Please provide examples.
We wishes to increase the efficiency of an ideal heat engine from 25% to 35%. If the initial temperature of the hot reservoir is 650oC.
The source of a sound wave has a power of 1.60 µW. Assume it is a point source. What is the sound level at that distance
What force is necessary to lift athin wire ring 2.5 cm in diameter from water surface at 20 degree celicious ? surface tension at 20 degree celicious is 0.0718 N/m. neglect the weight of ring
q1. a 3.3 block of wood sits on a table. a 3.0 bullet fired horizontally at a speed of 480 goes completely through the
A double slit separated by 0.0582 mm is placed 1.40 m from a screen. If yellow light of wavelength 590 nm strikes the double slit, what is the separation among the zeroth-order and first-order maxima on the screen?
A parallel-plate capacitor has square plates of edge length 2.4 cm and a plate spacing of 0.017 mm. If the gap between the plates is a vacuum
A positive charge q=3.2 x 10^-19 C moves with a velocity v=(2i + 3j - k)m/s through a region where both a uniform magnetic field and a uniform electric field exist. What angle does the force vector make relative to the positive x axis?
A 3.86-kHz tone is being produced by a speaker with a diameterof 0.239 m. The air temperature changes from 0 to 28.4oC. Assuming air to be an ideal gas, find the change in the diffraction angle
Two metal balls are hung from strings. The first ball, 0.09 kg, is pulled to the side and released so that it strikes the second ball with a speed of 1.62 m/s. What is the mass of the second ball
An 8 nC point charge is at the center of a 1.6 m x 1.6 m x 1.6 m cube. What is the electric flux through the top surface of the cube
Waves travel 5000 m/s along a wire that is 2m long. What is the wave length of the first harmonic? What is the frequency of the first harmonic
Then two moles of an ideal monatomic gas are placed in the right side of the container - call this container B. Each gas is initially at a temperature of 300 K. The system will, of course, after awhile achieve some equilibrium state. So, in summa..
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